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标题 标签 来源
Image Loading jquery Image Loading
HTML Markup

<div id="loader" class="loading"></div>


CSS 

DIV#loader {
  border: 1px solid #ccc;
  width: 500px;
  height: 500px;
}

/** 
 * While we're having the loading class set.
 * Removig it, will remove the loading message
 */
DIV#loader.loading {
  background: url(images/spinner.gif) no-repeat center center;
}



jQuery 

// when the DOM is ready
$(function () {
  var img = new Image();
  
  // wrap our new image in jQuery, then:
  $(img)
    // once the image has loaded, execute this code
    .load(function () {
      // set the image hidden by default    
      $(this).hide();
    
      // with the holding div #loader, apply:
      $('#loader')
        // remove the loading class (so no background spinner), 
        .removeClass('loading')
        // then insert our image
        .append(this);
    
      // fade our image in to create a nice effect
      $(this).fadeIn();
    })
    
    // if there was an error loading the image, react accordingly
    .error(function () {
      // notify the user that the image could not be loaded
    })
    
    // *finally*, set the src attribute of the new image to our image
    .attr('src', 'images/headshot.jpg');
});


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